[SCM] Samba Shared Repository - branch master updated
Jeremy Allison
jra at samba.org
Thu Jan 12 17:36:02 MST 2012
The branch, master has been updated
via 6c1d98e Add comments to all functions (to help me understand it better).
via 6da246b s3: Fix nested get_share_mode_lock calls
via 6f9442a s3: Move the share_mode_lock handling to its own file
via cfebba9 s3: Put an indirection layer into share_mode_lock
via 9cf6d73 s3: Introduce get_share_mode_lock_fresh()
via 540e51f s3: Replace fill_share_mode_lock()
from 15cdbba s4:repl_cleartext_pwd.py: add optional 'clear_utf16_name' parameter
http://gitweb.samba.org/?p=samba.git;a=shortlog;h=master
- Log -----------------------------------------------------------------
commit 6c1d98eac06df7f033d8a69bb5be985067f96c9b
Author: Jeremy Allison <jra at samba.org>
Date: Thu Jan 12 14:46:45 2012 -0800
Add comments to all functions (to help me understand it better).
Autobuild-User: Jeremy Allison <jra at samba.org>
Autobuild-Date: Fri Jan 13 01:35:03 CET 2012 on sn-devel-104
commit 6da246bae1b000cb3191e114e978510ccacb7e90
Author: Volker Lendecke <vl at samba.org>
Date: Tue Jan 10 17:07:29 2012 +0100
s3: Fix nested get_share_mode_lock calls
This forces us to only do one real get_share_mode_lock call and
share the data between the nested get_share_mode_lock calls.
Signed-off-by: Jeremy Allison <jra at samba.org>
commit 6f9442a705b7ca67c78137db537f556385aa8558
Author: Volker Lendecke <vl at samba.org>
Date: Tue Jan 10 14:13:49 2012 +0100
s3: Move the share_mode_lock handling to its own file
Signed-off-by: Jeremy Allison <jra at samba.org>
commit cfebba96bdab2097b6115f10b649ec6c23c72519
Author: Volker Lendecke <vl at samba.org>
Date: Tue Jan 10 13:56:37 2012 +0100
s3: Put an indirection layer into share_mode_lock
Signed-off-by: Jeremy Allison <jra at samba.org>
commit 9cf6d735d43f6f905b19f52d38c93aa30092333d
Author: Volker Lendecke <vl at samba.org>
Date: Mon Jan 9 14:30:53 2012 +0100
s3: Introduce get_share_mode_lock_fresh()
This slightly simplifies the code path for all callers which assume
that a share mode exists already. Only the callers in open_file_ntcreate
and open_directory will ever create new share modes.
Signed-off-by: Jeremy Allison <jra at samba.org>
commit 540e51f77e07cc65b6b097f8ff01cd10f04644d0
Author: Volker Lendecke <vl at samba.org>
Date: Mon Jan 9 14:09:28 2012 +0100
s3: Replace fill_share_mode_lock()
This replaces fill_share_mode_lock() with the two routines
fresh_share_mode_lock() and parse_share_modes(). This lifts the
decision whether a share mode already existed on level up.
Signed-off-by: Jeremy Allison <jra at samba.org>
-----------------------------------------------------------------------
Summary of changes:
source3/Makefile.in | 2 +-
source3/include/smb.h | 4 +
source3/librpc/idl/open_files.idl | 2 +-
source3/locking/locking.c | 557 +++++--------------------------------
source3/locking/proto.h | 11 +-
source3/locking/share_mode_lock.c | 542 ++++++++++++++++++++++++++++++++++++
source3/smbd/close.c | 30 +--
source3/smbd/open.c | 53 ++--
source3/smbd/oplock.c | 15 +-
source3/smbd/reply.c | 7 +-
source3/smbd/trans2.c | 7 +-
source3/utils/status.c | 8 +-
source3/wscript_build | 2 +-
13 files changed, 687 insertions(+), 553 deletions(-)
create mode 100644 source3/locking/share_mode_lock.c
Changeset truncated at 500 lines:
diff --git a/source3/Makefile.in b/source3/Makefile.in
index c3dbd31..b92097c 100644
--- a/source3/Makefile.in
+++ b/source3/Makefile.in
@@ -793,7 +793,7 @@ RPC_SERVER_OBJ = $(RPC_LSARPC_OBJ) $(RPC_WINREG_OBJ) $(RPC_INITSHUTDOWN_OBJ) \
RPC_CLIENT_SCHANNEL_OBJ = rpc_client/cli_pipe_schannel.o
LOCKING_OBJ = locking/locking.o locking/brlock.o locking/posix.o \
- librpc/gen_ndr/ndr_open_files.o
+ librpc/gen_ndr/ndr_open_files.o locking/share_mode_lock.o
PRIVILEGES_BASIC_OBJ = ../libcli/security/privileges.o
diff --git a/source3/include/smb.h b/source3/include/smb.h
index 2adfa36..11a05f9 100644
--- a/source3/include/smb.h
+++ b/source3/include/smb.h
@@ -163,6 +163,10 @@ struct wb_context;
struct rpc_cli_smbd_conn;
struct fncall_context;
+struct share_mode_lock {
+ struct share_mode_data *data;
+};
+
struct vfs_fsp_data {
struct vfs_fsp_data *next;
struct vfs_handle_struct *owner;
diff --git a/source3/librpc/idl/open_files.idl b/source3/librpc/idl/open_files.idl
index 9f06a0c..cefb75a 100644
--- a/source3/librpc/idl/open_files.idl
+++ b/source3/librpc/idl/open_files.idl
@@ -44,5 +44,5 @@ interface open_files
uint8 fresh;
uint8 modified;
[ignore] db_record *record;
- } share_mode_lock;
+ } share_mode_data;
}
diff --git a/source3/locking/locking.c b/source3/locking/locking.c
index db4f45f..7063b54 100644
--- a/source3/locking/locking.c
+++ b/source3/locking/locking.c
@@ -52,9 +52,6 @@
#define NO_LOCKING_COUNT (-1)
-/* the locking database handle */
-static struct db_context *lock_db;
-
/****************************************************************************
Debugging aids :-).
****************************************************************************/
@@ -431,64 +428,6 @@ void locking_close_file(struct messaging_context *msg_ctx,
}
}
-/****************************************************************************
- Initialise the locking functions.
-****************************************************************************/
-
-static bool locking_init_internal(bool read_only)
-{
- brl_init(read_only);
-
- if (lock_db)
- return True;
-
- lock_db = db_open(NULL, lock_path("locking.tdb"),
- lp_open_files_db_hash_size(),
- TDB_DEFAULT|TDB_VOLATILE|TDB_CLEAR_IF_FIRST|TDB_INCOMPATIBLE_HASH,
- read_only?O_RDONLY:O_RDWR|O_CREAT, 0644);
-
- if (!lock_db) {
- DEBUG(0,("ERROR: Failed to initialise locking database\n"));
- return False;
- }
-
- if (!posix_locking_init(read_only))
- return False;
-
- return True;
-}
-
-bool locking_init(void)
-{
- return locking_init_internal(false);
-}
-
-bool locking_init_readonly(void)
-{
- return locking_init_internal(true);
-}
-
-/*******************************************************************
- Deinitialize the share_mode management.
-******************************************************************/
-
-bool locking_end(void)
-{
- brl_shutdown();
- TALLOC_FREE(lock_db);
- return true;
-}
-
-/*******************************************************************
- Form a static locking key for a dev/inode pair.
-******************************************************************/
-
-static TDB_DATA locking_key(const struct file_id *id, struct file_id *tmp)
-{
- *tmp = *id;
- return make_tdb_data((const uint8_t *)tmp, sizeof(*tmp));
-}
-
/*******************************************************************
Print out a share mode.
********************************************************************/
@@ -510,279 +449,14 @@ char *share_mode_str(TALLOC_CTX *ctx, int num, const struct share_mode_entry *e)
}
/*******************************************************************
- Get all share mode entries for a dev/inode pair.
+ Fetch a share mode where we know one MUST exist. This call reference
+ counts it internally to allow for nested lock fetches.
********************************************************************/
-static bool parse_share_modes(const TDB_DATA dbuf, struct share_mode_lock *lck)
-{
- int i;
- struct server_id *pids;
- bool *pid_exists;
- enum ndr_err_code ndr_err;
- DATA_BLOB blob;
-
- blob.data = dbuf.dptr;
- blob.length = dbuf.dsize;
-
- ndr_err = ndr_pull_struct_blob(
- &blob, lck, lck,
- (ndr_pull_flags_fn_t)ndr_pull_share_mode_lock);
- if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
- DEBUG(1, ("ndr_pull_share_mode_lock failed\n"));
- return false;
- }
-
- lck->modified = false;
-
- if (DEBUGLEVEL >= 10) {
- DEBUG(10, ("parse_share_modes:\n"));
- NDR_PRINT_DEBUG(share_mode_lock, lck);
- }
-
- /*
- * Ensure that each entry has a real process attached.
- */
-
- pids = talloc_array(talloc_tos(), struct server_id,
- lck->num_share_modes);
- if (pids == NULL) {
- smb_panic("parse_share_modes: talloc_array failed");
- }
- pid_exists = talloc_array(talloc_tos(), bool, lck->num_share_modes);
- if (pid_exists == NULL) {
- smb_panic("parse_share_modes: talloc_array failed");
- }
-
- for (i=0; i<lck->num_share_modes; i++) {
- pids[i] = lck->share_modes[i].pid;
- }
-
- if (!serverids_exist(pids, lck->num_share_modes, pid_exists)) {
- smb_panic("parse_share_modes: serverids_exist failed");
- }
-
- i = 0;
- while (i < lck->num_share_modes) {
- struct share_mode_entry *e = &lck->share_modes[i];
- if (!pid_exists[i]) {
- *e = lck->share_modes[lck->num_share_modes-1];
- lck->num_share_modes -= 1;
- lck->modified = True;
- continue;
- }
- i += 1;
- }
- TALLOC_FREE(pid_exists);
- TALLOC_FREE(pids);
-
- return True;
-}
-
-static TDB_DATA unparse_share_modes(struct share_mode_lock *lck)
-{
- DATA_BLOB blob;
- enum ndr_err_code ndr_err;
-
- if (DEBUGLEVEL >= 10) {
- DEBUG(10, ("unparse_share_modes:\n"));
- NDR_PRINT_DEBUG(share_mode_lock, lck);
- }
-
- if (lck->num_share_modes == 0) {
- DEBUG(10, ("No used share mode found\n"));
- return make_tdb_data(NULL, 0);
- }
-
- ndr_err = ndr_push_struct_blob(
- &blob, lck, lck,
- (ndr_push_flags_fn_t)ndr_push_share_mode_lock);
- if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
- smb_panic("ndr_push_share_mode_lock failed");
- }
-
- return make_tdb_data(blob.data, blob.length);
-}
-
-static int share_mode_lock_destructor(struct share_mode_lock *lck)
-{
- NTSTATUS status;
- TDB_DATA data;
-
- if (!lck->modified) {
- return 0;
- }
-
- data = unparse_share_modes(lck);
-
- if (data.dptr == NULL) {
- if (!lck->fresh) {
- /* There has been an entry before, delete it */
-
- status = dbwrap_record_delete(lck->record);
- if (!NT_STATUS_IS_OK(status)) {
- char *errmsg;
-
- DEBUG(0, ("delete_rec returned %s\n",
- nt_errstr(status)));
-
- if (asprintf(&errmsg, "could not delete share "
- "entry: %s\n",
- nt_errstr(status)) == -1) {
- smb_panic("could not delete share"
- "entry");
- }
- smb_panic(errmsg);
- }
- }
- goto done;
- }
-
- status = dbwrap_record_store(lck->record, data, TDB_REPLACE);
- if (!NT_STATUS_IS_OK(status)) {
- char *errmsg;
-
- DEBUG(0, ("store returned %s\n", nt_errstr(status)));
-
- if (asprintf(&errmsg, "could not store share mode entry: %s",
- nt_errstr(status)) == -1) {
- smb_panic("could not store share mode entry");
- }
- smb_panic(errmsg);
- }
-
- done:
-
- return 0;
-}
-
-static bool fill_share_mode_lock(struct share_mode_lock *lck,
- struct file_id id,
- const char *servicepath,
- const struct smb_filename *smb_fname,
- TDB_DATA share_mode_data,
- const struct timespec *old_write_time)
-{
- bool fresh;
-
- /* Ensure we set every field here as the destructor must be
- valid even if parse_share_modes fails. */
-
- lck->servicepath = NULL;
- lck->base_name = NULL;
- lck->stream_name = NULL;
- lck->id = id;
- lck->num_share_modes = 0;
- lck->share_modes = NULL;
- lck->num_delete_tokens = 0;
- lck->delete_tokens = NULL;
- ZERO_STRUCT(lck->old_write_time);
- ZERO_STRUCT(lck->changed_write_time);
-
- fresh = (share_mode_data.dptr == NULL);
-
- if (fresh) {
- bool has_stream;
- if (smb_fname == NULL || servicepath == NULL
- || old_write_time == NULL) {
- return False;
- }
-
- has_stream = smb_fname->stream_name != NULL;
-
- lck->base_name = talloc_strdup(lck, smb_fname->base_name);
- lck->stream_name = talloc_strdup(lck, smb_fname->stream_name);
- lck->servicepath = talloc_strdup(lck, servicepath);
- if (lck->base_name == NULL ||
- (has_stream && lck->stream_name == NULL) ||
- lck->servicepath == NULL) {
- DEBUG(0, ("talloc failed\n"));
- return False;
- }
- lck->old_write_time = *old_write_time;
- lck->modified = false;
- } else {
- if (!parse_share_modes(share_mode_data, lck)) {
- DEBUG(0, ("Could not parse share modes\n"));
- return False;
- }
- }
- lck->fresh = fresh;
-
- return True;
-}
-
struct share_mode_lock *get_share_mode_lock(TALLOC_CTX *mem_ctx,
- const struct file_id id,
- const char *servicepath,
- const struct smb_filename *smb_fname,
- const struct timespec *old_write_time)
+ const struct file_id id)
{
- struct share_mode_lock *lck;
- struct file_id tmp;
- struct db_record *rec;
- TDB_DATA key = locking_key(&id, &tmp);
- TDB_DATA value;
-
- if (!(lck = talloc(mem_ctx, struct share_mode_lock))) {
- DEBUG(0, ("talloc failed\n"));
- return NULL;
- }
-
- rec = dbwrap_fetch_locked(lock_db, lck, key);
- if (rec == NULL) {
- DEBUG(3, ("Could not lock share entry\n"));
- TALLOC_FREE(lck);
- return NULL;
- }
-
- value = dbwrap_record_get_value(rec);
-
- if (!fill_share_mode_lock(lck, id, servicepath, smb_fname,
- value, old_write_time)) {
- DEBUG(3, ("fill_share_mode_lock failed\n"));
- TALLOC_FREE(lck);
- return NULL;
- }
-
- lck->record = rec;
- talloc_set_destructor(lck, share_mode_lock_destructor);
-
- return lck;
-}
-
-struct share_mode_lock *fetch_share_mode_unlocked(TALLOC_CTX *mem_ctx,
- const struct file_id id)
-{
- struct share_mode_lock *lck;
- struct file_id tmp;
- TDB_DATA key = locking_key(&id, &tmp);
- TDB_DATA data;
- NTSTATUS status;
-
- if (!(lck = talloc(mem_ctx, struct share_mode_lock))) {
- DEBUG(0, ("talloc failed\n"));
- return NULL;
- }
-
- status = dbwrap_fetch(lock_db, lck, key, &data);
- if (!NT_STATUS_IS_OK(status)) {
- DEBUG(3, ("Could not fetch share entry\n"));
- TALLOC_FREE(lck);
- return NULL;
- }
- if (data.dptr == NULL) {
- TALLOC_FREE(lck);
- return NULL;
- }
-
- if (!fill_share_mode_lock(lck, id, NULL, NULL, data, NULL)) {
- DEBUG(10, ("fetch_share_mode_unlocked: no share_mode record "
- "around (file not open)\n"));
- TALLOC_FREE(lck);
- return NULL;
- }
-
- return lck;
+ return get_share_mode_lock_fresh(mem_ctx, id, NULL, NULL, NULL);
}
/*******************************************************************
@@ -799,6 +473,7 @@ bool rename_share_filename(struct messaging_context *msg_ctx,
uint32_t new_name_hash,
const struct smb_filename *smb_fname_dst)
{
+ struct share_mode_data *d = lck->data;
size_t sp_len;
size_t bn_len;
size_t sn_len;
@@ -822,48 +497,48 @@ bool rename_share_filename(struct messaging_context *msg_ctx,
strip_two_chars = true;
}
- lck->servicepath = talloc_strdup(lck, servicepath);
- lck->base_name = talloc_strdup(lck, smb_fname_dst->base_name +
+ d->servicepath = talloc_strdup(d, servicepath);
+ d->base_name = talloc_strdup(d, smb_fname_dst->base_name +
(strip_two_chars ? 2 : 0));
- lck->stream_name = talloc_strdup(lck, smb_fname_dst->stream_name);
- if (lck->base_name == NULL ||
- (has_stream && lck->stream_name == NULL) ||
- lck->servicepath == NULL) {
+ d->stream_name = talloc_strdup(d, smb_fname_dst->stream_name);
+ if (d->base_name == NULL ||
+ (has_stream && d->stream_name == NULL) ||
+ d->servicepath == NULL) {
DEBUG(0, ("rename_share_filename: talloc failed\n"));
return False;
}
- lck->modified = True;
+ d->modified = True;
- sp_len = strlen(lck->servicepath);
- bn_len = strlen(lck->base_name);
- sn_len = has_stream ? strlen(lck->stream_name) : 0;
+ sp_len = strlen(d->servicepath);
+ bn_len = strlen(d->base_name);
+ sn_len = has_stream ? strlen(d->stream_name) : 0;
msg_len = MSG_FILE_RENAMED_MIN_SIZE + sp_len + 1 + bn_len + 1 +
sn_len + 1;
/* Set up the name changed message. */
- frm = talloc_array(lck, char, msg_len);
+ frm = talloc_array(d, char, msg_len);
if (!frm) {
return False;
}
- push_file_id_24(frm, &lck->id);
+ push_file_id_24(frm, &d->id);
DEBUG(10,("rename_share_filename: msg_len = %u\n", (unsigned int)msg_len ));
strlcpy(&frm[24],
- lck->servicepath ? lck->servicepath : "",
+ d->servicepath ? d->servicepath : "",
sp_len+1);
strlcpy(&frm[24 + sp_len + 1],
- lck->base_name ? lck->base_name : "",
+ d->base_name ? d->base_name : "",
bn_len+1);
strlcpy(&frm[24 + sp_len + 1 + bn_len + 1],
- lck->stream_name ? lck->stream_name : "",
+ d->stream_name ? d->stream_name : "",
sn_len+1);
/* Send the messages. */
- for (i=0; i<lck->num_share_modes; i++) {
- struct share_mode_entry *se = &lck->share_modes[i];
+ for (i=0; i<d->num_share_modes; i++) {
+ struct share_mode_entry *se = &d->share_modes[i];
if (!is_valid_share_mode_entry(se)) {
continue;
}
@@ -885,9 +560,9 @@ bool rename_share_filename(struct messaging_context *msg_ctx,
"pid %s file_id %s sharepath %s base_name %s "
"stream_name %s\n",
procid_str_static(&se->pid),
- file_id_string_tos(&lck->id),
- lck->servicepath, lck->base_name,
- has_stream ? lck->stream_name : ""));
+ file_id_string_tos(&d->id),
+ d->servicepath, d->base_name,
+ has_stream ? d->stream_name : ""));
messaging_send_buf(msg_ctx, se->pid, MSG_SMB_FILE_RENAME,
(uint8 *)frm, msg_len);
@@ -922,9 +597,9 @@ void get_file_infos(struct file_id id,
if (write_time) {
struct timespec wt;
- wt = lck->changed_write_time;
+ wt = lck->data->changed_write_time;
if (null_timespec(wt)) {
- wt = lck->old_write_time;
+ wt = lck->data->old_write_time;
}
--
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